Not necessarily the craziest things ever but to ease the transition from vanilla to adventurous - Sex outdoors, in a car, light bondage, cos play and/or role play, talking dirty, spend every Sunday naked taking turns to “treat” each other, hide notes with each of your kinks for the other to find and lead with.
Make a couple of sets Of cards - one set with fingers, tongue, 69, PIV (and anal?) and another set with locations - sofa, shower, car, garden, washing machine, dining table, bath, stairs, and perhaps a third set with random words - Take photos, video it, nurse outfit, vibrator, soap, Handcuffs, blindfold, feathers, Ice cubes, etc. Take turns at picking the cards. If you only want to stay in the bedroom the first and third sets should still work.